Cut ribs into serving-size pieces.
Combine remaining ingredients, mixing well; pour into a large shallow dish.
Add ribs; cover and refrigerate at least 2 hours, turning ribs occasionally.
Drain ribs, reserving marinade.
Place ribs, bone side down, on grill over slow coals.
Grill 30 minutes, turning ribs frequently.
Brush ribs with sauce; cook an additional 30 minutes, basting and turning frequently.